فایلکو

مرجع دانلود فایل ,تحقیق , پروژه , پایان نامه , فایل فلش گوشی

فایلکو

مرجع دانلود فایل ,تحقیق , پروژه , پایان نامه , فایل فلش گوشی

g joghrafeya ravesh tahghigh

اختصاصی از فایلکو g joghrafeya ravesh tahghigh دانلود با لینک مستقیم و پر سرعت .

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فرمت فایل word  و قابل ویرایش و پرینت

تعداد صفحات: 1

 

باسمه تعالی

روش مقاله نویسی

1)عنوان:

الف-عنوان باید کوتاه وگویاباشد

ب-عنوان بایدجامع ومانع باشد{دقیقاموضوع رامشخص کند(جامع) ، حدومرزمشخص باشد(مانع)}درطول کار نبایدازحدومرزخارج شد وازحاشیه روی درمطلب خودداری شود.

مثال عنوان: بررسی سینوپتیک انرژی باددرمنطفه سیستان(ایستگاه زابل)

2) چکیده:

چکیده باید شامل : بیان مسله(کوتاه) ، روش کار(خیلی کوتاه) و نتایج باشد .

چکیده را آخرکارمی نویسند اما ان را اول مقاله می گذارند.

3)واژگان کلیدی :

شامل واژه های است که خواننده قبل از مطالعه بایستی باآنهاآشنایی داشته باشد.

مثال: سینوبتیک ، تبخیربالقوه و.......

4) مقدمه :

پیشینه تحقیق (ادبیات تحقیق) سابقه کارهای که درارتباط باعنوان مقاله تاکنون انجام شده یا ازکارهای که در سطح جهانی وکشوری ومنطقه ای صورت گرفته شروع می کنیم تا به منطقه مورد نظربرسیم.

بعداز پیشیه راجع به موضوع مورد نظرتوضیح مختصرمی دهیم

5) روش شناسی(متدولوژی):

دراین قسمت نحوه وروش کارمورداستفاده برای تهیه مقاله توضیح داده می شودکه شامل روش های مانند:روش کتابخانه ای، میدانی، تهیه پرسش نامه و.......................

6) بحث :

شرح مطالب به بطورکامل دراین بخش آورده می شود

7) نتیجه گیری :

نتایج حاصل ازمقاله تهیه شده دراین قسمت ارائه می شود

8)منابع وماخذ :

1-ابتدا منابع فارسی سپس منابع انگلیسی

2-منابع به ترتیب حروف الفبا براساس فامیل نویسنده

گروه جغرافیا


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g joghrafeya ravesh tahghigh

پیاده سازی بلادرنگ کدک صحبت استاندارد G 728

اختصاصی از فایلکو پیاده سازی بلادرنگ کدک صحبت استاندارد G 728 دانلود با لینک مستقیم و پر سرعت .

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فرمت فایل word  و قابل ویرایش و پرینت

تعداد صفحات: 97

 

پایان نامه کارشناسی ارشد مخابرات سیستم

پیاده سازی بلادرنگ کدک صحبت استاندارد G.728

بر روی پردازنده TMS320C5402

چکیده

کدک صحبت استاندارد G.728 ، یک کدک کم تاخیر است که صحبت با کیفیت عالی را در نرخ بیت 16 kbps ارائه می دهد و برای شبکه های تلفن ماهواره ای و اینترنت و موبایل که به تاخیر زیاد حساس هستند ، مناسب است. در این رساله به پیاده سازی بلادرنگ اینکدر و دیکدر G.728 بصورت دوطرفه کامل ( Full Duplex ) بر روی پردازنده TMS320C5402 می پردازیم .

روشی ترکیبی برای برنامه نویسی TMS ارائه می شود که در آن زمان وپیچیدگی برنامه نویسی نسبت به برنامه نویسی دستی به 30% کاهش می یابد . در این روش پس از برنامه نویسی و شبیه سازی ممیزثابت الگوریتم کدک به زبان C ، با استفاده از نرم افزار ( Code Composer Studio ) CCS ، برنامه به زبان اسمبلی ترجمه شده و بهینه سازی دستی در کل کد اسمبلی صورت می گیرد . سپس بعضی از توابع مهم برنامه از نظر MIPS ، بصورت دستی به زبان اسمبلی بازنویسی می شوند تا برنامه بصورت بلادرنگ قابل اجرا گردد . در پایان نتایج این پیاده سازی ارائه می شود .

کلمات کلیدی

کدینگ و فشرده سازی صحبت ، پیاده سازی بلادرنگ ، DSP ، TMS320C5402 ، برد DSK

فهرست

- مقدمه 4

فصل 1 : بررسی و مدل سازی سیگنال صحبت

1-1- معرفی سیگنال صحبت 6

1-2- مدل سازی پیشگویی خطی 10

1-2-1- پنجره کردن سیگنال صحبت 11

1-2-2- پیش تاکید سیگنال صحبت 13

1-2-3- تخمین پارامترهای LPC 14

فصل 2 : روش ها و استانداردهای کدینگ صحبت

2-1- مقدمه 15

2-2- روش های کدینگ 19

2-2-1- کدرهای شکل موج 21

2-2-2- کدرهای صوتی 22 2-2-3- کدرهای مختلط 24

الف- کدرهای مختلط حوزه فرکانس 27

ب- کدرهای مختلط حوزه زمان 29

فصل 3 : کدر کم تاخیر LD-CELP

3-1- مقدمه 34

3-2- بررسی کدرکم تاخیر LD-CELP 36

3-2-1- LPC معکوس مرتبه بالا 39

3-2-2- فیلتر وزنی شنیداری 42

3-2-3- ساختار کتاب کد 42

3-2-3-1- جستجوی کتاب کد 43

3-2-4- شبه دیکدر 45

3-2-5- پست فیلتر 46

فصل 4 : شبیه سازی ممیزثابت الگوریتم به زبان C

4-1- مقدمه 49

4-2- ویژگی های برنامه نویسی ممیزثابت 50

4-3- ساده سازی محاسبات الگوریتم 53

4-3-1- تطبیق دهنده بهره 54

4-3-2- محاسبه لگاریتم معکوس 58

4-4- روندنمای برنامه 59

4-4-1- اینکدر 63

4-4-2- دیکدر 69

فصل 5 : پیاده سازی الگوریتم برروی DSP

5-1- مقدمه 74

5-2- مروری بر پیاده سازی بلادرنگ 75

5-3- چیپ های DSP 76

5-3-1- DSP های ممیزثابت 77

5-3-2- مروری بر DSP های خانواده TMS320 78

5-3-2-1- معرفی سری TMS320C54x 79

5-4- توسعه برنامه بلادرنگ 81

5-5- اجرای برنامه روی برد توسعه گر C5402 DSK 82

5-5-1- بکارگیری ابزارهای توسعه نرم افزار 84

5-5-2- استفاده از نرم افزارCCS 86

5-5-3- نتایج پیاده سازی 94

5-6- نتیجه گیری و پیشنهاد 97

- ضمائم

- ضمیمه (الف) : دیسکت برنامه های شبیه سازی ممیز ثابت به زبان C و

پیاده سازی کدک به زبان اسمبلی - ضمیمه (ب) : مقایسه برنامه نویسی C و اسمبلی 98

- مراجع 103


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پیاده سازی بلادرنگ کدک صحبت استاندارد G 728

ذهنیت فلسفی

اختصاصی از فایلکو ذهنیت فلسفی دانلود با لینک مستقیم و پر سرعت .

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تعداد صفحات: 2

 

PHILOSOPHY OF MIND by G.W.F. Hegel

(Part Three of the Encyclopaedia of the Philosophical Sciences)

William Wallace translation

The knowledge of Mind is the highest and hardest, just because it is the most 'concrete' of sciences. The significance of that 'absolute' commandment, Know thyself - whether we look at it in itself or under the historical circumstances of its first utterance - is not to promote mere self-knowledge in respect of the particular capacities, character, propensities, and foibles of the single self. The knowledge it commands means that of man's genuine reality - of what is essentially and ultimately true and real - of mind as the true and essential being. Equally little is it the purport of mental philosophy to teach what is called knowledge of men - the knowledge whose aim is to detect the peculiarities, passions, and foibles of other men, and lay bare what are called the recesses of the human heart. Information of this kind is, for one thing, meaningless, unless on the assumption that we know the universal - man as man, and, that always must be, as mind. And for another, being only engaged with

casual, insignificant, and untrue aspects of mental life, it fails to reach the underlying essence of them all - the mind itself.

§ 378 Pneumatology, or, as it was also called, Rational Psychology, has been already alluded to in the Introduction to the Logic as an abstract and generalizing metaphysic of the subject. Empirical (or inductive) psychology, on the other hand, deals with the 'concrete' mind: and, after the revival of the sciences, when observation and experience had been made the distinctive methods for the study of concrete reality, such psychology was worked on the same lines as other sciences. In this way it came about that the metaphysical theory was kept outside the inductive science, and so prevented from getting any concrete embodiment or detail: whilst at the same time the inductive science clung to the conventional common-sense metaphysics with its analysis into forces, various activities, etc., and rejected any attempt at a 'speculative' treatment.

The books of Aristotle on the Soul, along with his discussions on its special aspects and states, are for this reason still by far the most admirable, perhaps even the sole, work of philosophical value on this topic. The main aim of a philosophy of mind can only be to reintroduce unity of idea and principle into the theory of mind, and so reinterpret the lesson of those Aristotelian books.

§ 379 Even our own sense of the mind's living unity naturally protests against any attempt to break it up into different faculties, forces, or, what comes to the same thing, activities, conceived as independent of each other. But the craving for a comprehension of the unity is still further stimulated, as we soon come across distinctions between mental freedom and mental determinism, antitheses between free psychic agency and the corporeity that lies external to it, whilst we equally note the intimate interdependence of the one upon the other. In modern times especially the phenomena of animal magnetism have given, even in experience, a lively and visible confirmation of the underlying unity of soul, and of the power of its 'ideality'. Before these facts, the rigid distinctions of practical common sense are struck with confusion; and the necessity of a 'speculative' examination with a view to the removal of difficulties is more directly forced upon the student.

§ 380 The 'concrete' nature of mind involves for the observer the peculiar difficulty that the several grades and special types which develop its intelligible unity in detail are not left standing as so many separate existences confronting its more advanced aspects. It is otherwise in external nature. There, matter and movement, for example, have a manifestation all their own - it is the solar system; and similarly the differentiae of sense-perception have a sort of earlier existence in the properties of bodies, and still more independently in the four elements. The species and grades of mental evolution, on the contrary, lose their separate existence and become factors, states, and features in the higher grades of development. As a consequence of this, a lower and more abstract aspect of mind betrays the presence in it, even to experience, of a higher grade. Under the guise of sensation, for example, we may find the very highest mental life as its modification or its embodiment. And so sensation, which is but a mere form and vehicle, may to the superficial glance seem to be the proper seat and, as it were, the source of those moral and religious principles with which it is charged; and the moral and religious principles thus modified may seem to call for treatment as species of sensation. But at the same time, when lower grades of mental life are under examination, it becomes necessary, if we desire to point to actual cases of them in experience, to direct attention to more advanced grades for which they are mere forms. In this way subjects will be treated of by anticipation which properly belong to later stages of development (e.g. in dealing with natural awaking from sleep we speak by anticipation of consciousness, or in dealing with mental derangement we must speak of intellect).

What Mind (or Spirit) is

§ 381 From our point of view mind has for its presupposition Nature, of which it is the truth, and for that reason its absolute prius. In this its truth Nature is vanished, and mind has resulted as the 'Idea' entered on possession of itself. Here the subject and object of the Idea are one - either is the intelligent unity, the notion. This identity is absolute negativity - for whereas in Nature the intelligent unity has its objectivity perfect but externalized, this self-externalization has been nullified and the unity in that way been made one and the same with itself. Thus at the same time it is this identity only so far as it is a return out of nature.

§ 382 For this reason the essential, but formally essential, feature of mind is Liberty: i.e. it is the notion's absolute negativity or self-identity. Considered as this formal aspect, it may withdraw itself from everything external and from its own externality, its very existence; it can thus submit to infinite pain, the negation of its individual immediacy: in other words, it can keep itself affirmative in this negativity and possess its own identity. All this is possible so long as it is considered in its abstract selfcontaineduniversality.

§ 383 This universality is also its determinate sphere of being. Having a being of its own, the universal

is self-particularizing, whilst it still remains self-identical. Hence the special mode of mental being is 'manifestation'. The spirit is not some one mode or meaning which finds utterance or externality only in a form distinct from itself: it does not manifest or reveal something, but its very mode and meaning is this revelation. And thus in its mere possibility mind is at the same moment an infinite, 'absolute', actuality.

§ 384 Revelation, taken to mean the revelation of the abstract Idea, is an unmediated transition to Nature which comes to be. As mind is free, its manifestation is to set forth Nature as its world; but because it is reflection, it, in thus setting forth its world, at the same time presupposes the world as a nature independently existing. In the intellectual sphere to reveal is thus to create a world as its being - a being in which the mind procures the affirmation and truth of its freedom.

The Absolute is Mind (Spirit) - this is the supreme definition of the Absolute. To find this definition and to grasp its meaning and burden was, we may say, the ultimate purpose of all education and all philosophy: it was the point to which turned the impulse of all religion and science: and it is this impulse that must explain the history of the world. The word 'Mind' (Spirit) - and some glimpse of its meaning - was found at an early period: and the spirituality of God is the lesson of Christianity.


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